Rocky Linux kernel rebuilds can append an extra release suffix to the
source RPM name. For example, kernel-5.14.0-687.10.1.el9_8.0.1.src.rpm can
still contain a linux-5.14.0-687.10.1.el9_8.tar.* source archive.
The exact linux-${kver}*.tar.* match then fails before the source tree
can be extracted.
Look for the archive name again with a trailing .0.N rebuild suffix
removed and keep renaming the extracted tree to the full requested kernel
release, so later paths remain unchanged.